Wash the kale thoroughly under running water.
Remove the tough stems and chop the leaves into bite-sized pieces.
Place the chopped kale in a large bowl.
Drizzle olive oil over the kale and massage it gently for a few minutes.
Add lemon juice, salt, and pepper to taste.
Incorporate the halved cherry tomatoes into the bowl.
Slice the avocado and gently fold it into the salad.
Add the chopped walnuts for crunch.
Toss the salad carefully to combine all ingredients.
Serve immediately or refrigerate for up to one hour for flavors to meld.